Question

It is estimated that the number of foreigners coming to China to learn the language over the last few years ________ maintained an average annual growth rate of 35 percent．

1. A.
   has
2. B.
   have
3. C.
   is
4. D.
   are

Answer 1

A
這句句子的意思是“據估計，在過去的幾年中，來中國學習語言的外國人以每年35％的年增長率遞增�！边@里有時間狀語over the last few years，句子要用現在完成時，所以選項C和D均不對。而a number of加上可數名詞復數，我們謂語動詞用復數，the number of加上可數名詞復數，謂語動詞用單數，所以這里用has．